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Finding the Fourth Proportional to 194,780.62, 292,187.58 and 68,409.86

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Solution

The fourth proportional to 194,780.62, 292,187.58 and 68,409.86 is: 102,620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,780.62 : 292,187.58 = 68,409.86 : x
  2. Step 2: Convert to fraction form
    194,780.62/292,187.58 = 68,409.86/x
  3. Step 3: Cross multiply
    194,780.62x = 292,187.58 × 68,409.86
  4. Step 4: Simplify right side
    194,780.62x = 19,988,509,980.60
  5. Step 5: Solve for x
    x = 19,988,509,980.60/194,780.62
  6. Step 6: Final answer
    x = 102,620.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.